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Acetazolamide Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Acetazolamide (Brand Name: Diamox) is a "water pill" (diuretic) used to prevent and reduce the symptoms of altitude sickness. Acetazolamide is also used with other medications to treat a certain type of eye problem (open-angle glaucoma). Acetazolamide is available in generic form. Common side effects of acetazolamide include:
- lightheadedness, and
- an increased amount of urine, especially during the first few days as your body adjusts to the medication.
- Other side effects of acetazolamide include blurred vision,
- dry mouth,
- loss of appetite,
- changes in the sense of taste,
- stomach upset,
- tingling feeling,
- ringing in the ears (tinnitus),
- confusion, and
Tell your doctor if you have unlikely but serious side effects of acetazolamide including:
- increased body hair,
- hearing loss,
- unusual tiredness,
- persistent nausea or vomiting, or
- severe stomach or abdominal pain.
Dosage of Acetazolamide depends on the condition being treated and the patient's response. Acetazolamide may interact with cisapride, methenamine, anticonvulsants, other diuretics, cyclosporine, digoxin, drugs for diabetes, drugs that cause loss of potassium, lithium, memantine, procainamide, quinidine, aspirin and other salicylates, sodium bicarbonate, stimulants, or tricyclic antidepressants. Tell your doctor all medications you are taking. Acetazolamide should be used during pregnancy only if prescribed. This medication passes into breast milk but is unlikely to harm a nursing infant. Consult your doctor before breastfeeding.
Our Acetazolamide (Brand Name: Diamox) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Acetazolamide Overview - Patient Information: Side Effects
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these very unlikely but serious side effects occur: increased body hair, hearing loss, ringing in the ears, unusual tiredness, persistent nausea/vomiting, severe stomach/abdominal pain.
Seek immediate medical attention if any of these unlikely but very serious side effects occur: easy bleeding/bruising, fast/irregular heartbeat, signs of infection (e.g., fever, persistent sore throat), mental/mood changes (e.g., confusion, difficulty concentrating), severe muscle cramps/pain, tingling of the hands/feet, blood in the urine, dark urine, painful urination, yellowing of the eyes/skin.
A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: blisters/sores in the mouth, rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Acetazolamide (Acetazolamide Tablets)
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Acetazolamide FDA Prescribing Information: Side Effects
Adverse reactions, occurring most often early in therapy, include paresthesias, particularly a “tingling” feeling in the extremities, hearing dysfunction or tinnitus, loss of appetite, taste alteration and gastrointestinal disturbances such as nausea, vomiting and diarrhea, polyuria, and occasional instances of drowsiness and confusion.
Transient myopia has been reported. This condition invariably subsides upon diminution or discontinuance of the medication. Other occasional adverse reactions include urticaria, melena, hematuria, glycosuria, hepatic insufficiency, flaccid paralysis, photosensitivity and convulsions. Also see PATIENT INFORMATION for possible reactions common to sulfonamide derivatives. Fatalities have occurred although rarely, due to severe reactions to sulfonamides including Stevens-Johnson syndrome, toxic epidermal necrolysis, fulminant hepatic necrosis, agranulocytosis, aplastic anemia and other blood dyscrasias (see WARNINGS).
Read the entire FDA prescribing information for Acetazolamide (Acetazolamide Tablets)
Additional Acetazolamide Tablets Information
Acetazolamide Tablets - User Reviews
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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